<template>
    <el-container class="home_container">
        <el-header>
            <div>
                <img src="../assets/1.png" style="height: 50px;" />
                <span>后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button>
        </el-header>
        <el-container>
            <el-aside :width="isCollapse ? '64px' : '200px'">
                <div class="toggle_btn" @click="toggleCollapse">
                    |||
                </div>
                <el-menu :default-active="activePath" class="el-menu-vertical-demo" background-color="blueviolet" text-color="#fff"
                    active-text-color="#409EFF" :unique-opened="true" :collapse="isCollapse" :collapse-transition="false"
                    :router="true">
                    <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
                        <template slot="title">
                            <i :class="iconsObj[item.id]"></i>
                            <span>{{ item.authName }}</span>
                        </template>
                        <el-menu-item :index="'/' + subItem.path + ''" 
                        v-for="subItem in item.children" 
                        :key="subItem.id"
                        @click="saveNavState('/'+subItem.path)"
                        >
                            <template slot="title">
                                <i class="el-icon-menu"></i>
                                <span>{{ subItem.authName }}</span>
                            </template>
                        </el-menu-item>
                    </el-submenu>
                </el-menu>
            </el-aside>
            <el-main>
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>
<script>

export default {

    data() {
        return {
            menulist: [],
            iconsObj: {
                "125": 'iconfont icon-user',
                "103": "iconfont icon-tijikongjian",
                "101": "iconfont icon-shangpin",
                "102": "iconfont icon-danju",
                "145": "iconfont icon-baobiao"
            },
            isCollapse: false,
            activePath:''

        }
    },
    created() {
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem("activePath")
    },
    methods: {
        logout() {
            window.sessionStorage.clear();
            this.$router.push('/login')
        },
        async getMenuList() {
            const { data: res } = await this.$http.get('menus')
            console.log(res)
            if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
            this.menulist = res.data
        },
        toggleCollapse() {
            this.isCollapse = !this.isCollapse
        },
        saveNavState(activePath){
            window.sessionStorage.setItem("activePath",activePath)
            this.activePath = activePath
        }

    }
}

</script>

<style scoped>
.home_container {
    height: 100%;

}

.el-header {
    background-color: aqua;
    display: flex;
    justify-content: space-between;
    padding: 0px 5px;
    align-items: center;
    color: #ffff;
    font-size: 20px;

    >div {
        display: flex;
        align-items: center;

        span {
            margin-left: 10px;
        }
    }
}

.el-aside {
    background-color: blueviolet;
    border-right: 0px;
}

.el-menu {
    border-right: 0px;
}

.el-main {
    background-color: chartreuse;
}

.iconfont {
    margin-right: 10px;
}

.toggle_btn {
    background-color: blueviolet;
    font-size: 10px;
    line-height: 20px;
    color: #ffff;
    text-align: center;
    letter-spacing: 0.2cm;
    cursor: pointer;
}
</style>